Woodworking-machine.



G. A. TURNER.

WOQDWORKING MACHINE. APPLICATION FILED 11.24, 1912.

1,086,246 Patented Feb. 3, 1914.

4 SHEETS-SHEET 1.

WITNESSES INVENTOR ffoflawwi 5 G. A. TURNER.

woonwoakme MACHINE.

APPLICATION FILED APR.24, 1912.

1,086,246. Patented Feb. 3,1914.

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[N VEN TOR G. A. TURNER.

WOODWORKING MACHINE.

APPLICATION FILED APR.24, 1912. 1,086,246.. Patented Feb. 3, 1914.

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UNITED STATES PATENT OFFICE.

GEORGE A. TURNER, 0F KANE, PENNSYLVANIA, ASSIGNOR T0 HOLGATE BROTHERSCOMPANY, OF KANE, PENNSYLVANIA.

WOODWORKING-MACHINE.

Specification of Letters Patent.

Patented Feb. 3, 1914.

Application filed April 24, 1912. Serial No. 692,884.

To all whom it may concern:

Be it known that I, GEORGE A. TURNER, a citizen of the United States,residing at Kane, in the county of McKean and State of Pennsylvania,have invented certain new and useful Improvements in Vioodworking-Machines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

invention relates to an improvement in machines for making brushhandles, and it consists in the parts and combinations of parts as willbe more fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in plan of my improvedmachine. Fig. 1 is a view of the handle blank before shaping; Fig. 1 isa view of the same after it has passed through the machine; Fig. 2 is aview in vertical section through the table,

the table supporting frame being in elevation; Fig. 3 is an enlargedview in section of the table; Fig. 4 is a-view in edge elevation of oneof the clamps; Fig. 5 is a top plan view of the movable jaw of one ofthe clamps; Fig. 6 isv a top plan view of one of the lower jaws of aclamp; Fig. 7 is a view in section of the adjustable abutments carriedby the lower jaws of the clamp; Fig. 8 is a view of the eccentrics andthe washer which forms the fulcrum for the movable jaw of the clamp;Fig. 9 is a view in perspective of the washer; Fig. 10 is a view showingone of the cutters mounted and Fig. 11 is a view of one of the cuttingknives.

1 represents a rotating table preferably threaded on shaft 2, whichlatter is journaled in a frame 3 carried by base 4. Loosely mounted onshaft 2 is the worm wheel 5 meshing with worm-6, on shaft 7, the lattercarrying pulleys 8 driven by belt 9. Worm wheel 5 is provided with anupwardly projecting sleeve 5? having clutch teeth at itsupper endadapted to be engaged by similarly shaped teeth on the. sliding sleeve.5* which latter is keyed to the shaft 2 so as to rotate thereon but isfree to he moved vertically to disengage and engage the sleeve 5 Slidingsleeve 5 may be actuatedv by any suitable means, andby disengaging itfrom sleeve 5 the rotation of the table may i be stopped instantly.

Table l is of generally circular form, but its periphery is cut away orshaped at intervals to conform to the outer contour of the clamps asclearly shown in Fig. 1, and it is provided centrally with a hub 10, andwith an upwardly pro ecting flange 11 concentric with the hub. Restingon the upper face of the table 1, is a series of jaws 12, which areretained against displacement by the stud bolts 13, and form the lowerjaws of the clamps. The bolts 13, one for each clamp are solidly securedto the table 1, and the outer edges of the jaws 12 conform in contour tothe shape of the com leted handle, and form the pattern guides or thecutters as will be hereinafter explained.

Located above the fixed clamping jaws 12 are the movable clamping jaws14, each of which carries a clamping plate 15 and rubber or otheryielding cushion l6 interposed between the jaw 14 and plate 15, the saidplate and cushion being secured to the jaw by the bolts 17. Near theinner end of each jaw 14 is a threaded opening for the engagement of theadjusting screw 20, the lower end of which is rounded and rests in acavity 22 formed in the bottom of its recess in the circular flange 11on table 1. This flange 11 is recessed or cut away at regular intervals,as shown in Fig. 1, for the reception of the rear or inner ends of themovable jaws of the clamps, the said rear or inner ends of the jawsbeing much narrower than the outer ends. The adjusting screws 20, whichas above explained rest. with their rounded ends within cavities 22, arelocked to the upper jaws 14 by the lock nuts 24 and form the fulcrums onwhich the upper jaws turn. The stud bolts 13 which secure the lower jawsin place, pass loosely through openings in the upper jaws, and each isprovided at its upper end with a clamp nut 23, eccentrics 21 21 andcollar 26, the latter having a. curved bearing face against which theupper jaw bears. The eccentrics 21 and 21 mounted on thebolts 13 areintermediate the nut 23 and the collar 26, and one member'21 is keyed toeach bolt, the other member 21 being loose on the bolt and provided withoppositcly projecting lever arms 66. The

upper movable jaws of the several clamps are therefore held in place bythe stud bolts 13, and by the side walls of the recesses 11, and also bythe screws 19. The eccentrics 21 on the bolts 13 bear against theeccentrics 21 keyed to bolt 13 adjacent the outer ends of the jaws, andlimit the upward or opening movement of the jaws. The collars 26 onbolts 13 are rounded on their lower faces, and each is provided with alug adapted to enter a recess 29 in the upper face of jaw 14 forlimiting the movement of the collar on the bolt.

The upper jaws 14 are normally held away from the lower jaws b thesprlngs 30, hence it will be seen that W en the jaws are open, andeccentrics 21 turned, the said eccentrics, acting against the eccentrics21 depress the outer ends of the jaws, thus causing the latter to clampthe blanks 31 solidly in place between the jaws.

'The blank designed for finishing in the machine is shown in Fi 1, andcomprises a head 32 and shank or andle 33, the head, or that partthereof intermediate the parallel side edges, being thicker than theshank 32., In order to com ensate for this difference in thickness, t eclamping faces of the upper and lower jaws are cut away (see Figs. 4 and6) to receivethe head, so that when the blank is placed between thejaws, itwill rest solidly throughout its length on the lower jaw, and beengaged throughout its length by the upper jaw.

Secured to each lower jaw are a series of stops 34 and 35, each of whichis provided with an adjustable abutment, adapted to engage respectivelythe end and side of the blank and hold same in a position to be actedupon b the cutters. The stop 34 carries the a utment 36, which latter ismounted on the screws 37 and is held in its outward position by thesprings 38, while the stops 35 each carry an abutment 39, which in thepresent instance is a screw, locked in place by the binding plate 40,and locking screw 41. Each abutment screw passes throu h a threaded holein binding plate 40, which latter isnormally slightly removed from stop35. Lockin screw 41 passes through a plain-hole'in t e binding late andis screwed'into the stop, and its ead bearing against the binding platecauses the latter to grip the abutment screw and lock same against thepossibility of accidental displacement. It will therefore be seen thatby adjusting the abutments out or in, any size handle 0 the type shownin Fig. 1, can 'bewaccommodated and held and supported in position to beacted upon by the cutters. The outer faces of the jaws conform to thecontour of the finished handle, and the lower edges of the lower jaws,which project outwardl beyond the upper edges of said jaws, as s own inFig.

2, constitute the guide patterns for the cutters.

The table 1 is provided with a series of these clamps each of which isadapted to receive a blank shown in Fig. 1 The table revolves in thedirection of the arrow shown in Fig. 1, and carries the blankssuccessively to the cutters 42 of which I prefer to use two or more. Inthe present instance, I have shown three cutters each secured toaspindle, and yieldingly held in contact with the work. Each spindle 43is journaled in bearings 44 secured to a slide 45 mounted to movevertically in the guide 46 of swinging frame 47 A lug 48 projects fromeach slide throu h a slot in swingin frame 47 and is provided with athreaded ole for the passage of the threaded end of rod 49, the said rodbeing supported by and journaled in the bearing 50 on. swinging frame 47It will therefore be seen that by turning rod 49 by means of a wrench orother tool, the slide carrying the spindle may be adjusted up or down soas to brin the cutters in proper positions with relation to the blank tobe cut.

Journaled on the upper end of each slide 45 is an adjusting-screw 51 thethreaded portion of which engages threads in an opening in the dependinglip of bracket 52, mounted to slide on the upper end of slide 45. Theopposite end of bracket 52 is provided with a cylindrical opening forthe passage of the spindle 43, and carries the pattern follower 53 (seeFig. 3), which has ball bearings, and is designed to engage the patternguide edge of the lower jaws of the clamps. If desired the bracket maycarry the bushing 54, which however is considerably larger than thespindle 43, so as to permit of the necessary adjustment of the patternfollower with relation to the cutters. These brackets are secured to thetop of the slides 45 by the screws 55, which latter pass throughelongated slots in the brackets and operate to lock the bracket solidlyto the slide. By loosening up on screws 55 the brackets will be free tobe moved in or out and thus adjust the pattern follower in properposition with relation to the cutters. Thesefollowers 53 move in contactwith the lower edge of the lower clamping jaws which constitute thepattern guides, and as such follower bears a fixed relation to itscutter, and is free to move horizontally toward and away from the axisof rotating table 1, it will be seen that'the cutters will follow thecontour of the pat tern guides and shape the exposed side of the handleblank toconform therewith.

' The slides 45 are mounted in the swinging frame'47, and the latter arehinged at one side edge, as at 56, to the semi-circular frame 57, whichlatter is a part of, and is secured to, the main frame of the machine.Projecting rearwardly from the rear 'faces of the swinging frame 47 arethe arms 58, which latter are connected at their free ends to thesprings 59, secured at their free ends to frame 57. These springsyieldingly hold the pattern follower 53 in contact with the outer edgesof the pattern guides, and the cutters 42 in contact with the side edgesof the blank 31--32, so that the cutters reproduce on the blank, thecurve of the outer side of the pattern guide.

Slides 45 are mounted in the guides integral with the swinging frame 47.Each swinging frame has two arms 47 each provided at its free end with abearing 47 the upper ones of which are adapted to receive the pintles 47and the lower ones the pintles 47 The up er pintles 47 are screwed intobrackets on Frame 57 and are'provided with plain ends to engage bearings47*, while the lower-pintles 47 d are simply headed pins held inbrackets on frame 57 by the set screws 57. I prefer to interpose bronzecollars 57 with hardened balls between them, intermediate the lowerbearing 47 and its support, so as to provide for easy swinging movemtntof the several frames. While I have shown three such frames, eachcarrying a cutter I may use only two or more than three, hence I wouldhave it understood that the exact number of cutters used is notessential.

In the operation of the machine, the table turnsin the direction of thearrow shown in Fig. 1, slowly enough for an operator standing at thefront of the machine to take out and replace a blank, and it requirestwo revolutions of the table to finish both edges of a blank. As thetable revolves, a blank, shaped as shown in Fig. 1, is introducedbetween each pair of clamping jaws and against the abutments 36 and 39,and after each is so placed, it is locked temporarily by the rod 60.These rods, one for each pair of clamping jaws, are each mounted to movevertically in the upper jaw of its clamp. It extends through its jaw andis held upwardly by the spring shown in Fig. 4. Secured to the top ofthe jaw adjacent rod 60 is the post 61 carrying the block 62 whichlatter is yieldingly forced downwardly by the spring 63, and journaledon the block 62 is the lever 64 having a cam end 65, which is located ina position to engage the upper protruding end of rod 60. After the blankhas been placed in its proper positionbetween the jaws, lever 64 isthrown up and its cam end 65 coming in contact with the upper end of rod60 forces the latter downwardly into contact with the blank, the block62 giving or yielding sufliciently for this purpose. The blank is thustemporarily secured in place against the possibility of accidentaldisplacement, and is subsequently firmly locked by the eccentric 21 onbolt 13.

This eccentric is as before explained provided with the double armedlever 66 which, as the table is rotated, comes in contact with the stop67, shown in Fig. 1, and turns eccentric 21. This movement of theeccentric firmly locks the upper jaw of the clamp in its closed positionand. clamps the blank between the two jaws. Just after the eccentric hasbeen turned to lock the blank between the jaws of the clamp, theupstanding arm 64 of the temporary clamp comes into contact with thestop 67* (see Fig. 1), and is thrown back to its normal position. Thejaws with the blank firmly clamped and supported by lateral and endabutments, now move into contact with the cutters 42, the first of whichremoves part of the material of the blank and the others finish it. Insome instances, particularly with small blanks or blanks made of softwood, two spindles and cutters will be ample, in which event the thirdcutters may be removed. After the blank has passed the cutters, theopposite end of arm 66 on eccentric 21, comes in contact with the stop68 (see Fig. 1), which turns eccentric 21 in a direction to release theupper aw of the clamp, thus permitting the latter to assume the positionshown at the left of Fig. 2, and leaving the blank free to be graspedand removed.

From the foregoing it will be seen that only one side of the blank isoperated upon at a time, and after one side has been shaped the blank isremoved and replaced so as to expose its opposite side edge to thecutters. The blanks at the'start are as shownin Fig. 1. After onerevolution of the table they are shaped at one side as shown in dottedlines in Fig. 6, and after the second revolution of the table, thehandle is shaped'as shown in Fig. 1". I

In the operation of the machine,]the operator stands at the front of thetable and inserts the blanks between the jaws of theoperator thenwithdraws same turns it and again temporarily clamps it,'after which theoperation is repeated. As it now comes within reach of the operator hewithdraws it and inserts anew blank.

In the present-instance I have shown the cutter spindles all rotated bya single belt 69, which passes, as shown in Fig. 1, around pulleys onthe several cutter spindles and around the sheaves 70 carried by theframe, a take-up or tightener '71 being employed for taking up the slackand compensating for the movements of the spindles toward and away fromthe axis of the table.

It is evident that many slight changes might be resorted to in therelative arrangement of parts shown and described without departing fromthe spirit and scope of my invention. Hence I would have it understoodthat I do not wish 'to confine myself to the exact construction andarrangement of parts shown and described, but, 1

Having fully described my invention what I claim as new and desire tosecureby Let clamping jaws, manually operated means for temporarilyholding the blanks within the clamps, and automatically actuated meansfor first closing said jaws onto the blanks prior to the engagement ofthe blanks by the cutters and for o ening said jaws to releasethe blanksafter t ey have been acted upon by the cutters. v

3. The combination of a rotatin table, a series of fixed clamping jawsra ially arranged thereon, a movable clamping jaw located above andcooperating with each fixed jaw, each movable 'jaw' being ful} crulnedat its inner end and free at its outer end, a bolt for each pair ofjaws,'each bolt being secured to the table and passing loosely throughits upper jaw, springs bearing against the upper jaws for normallyholding them away from the fixed jaws, an

eccentric'one each bolt for closing the mov- -able jaw, and automaticmeans for rotating the eccentrics whereby the movable-jaws will beclosed onto the blanks and subsequently opened to release the blanks.

4. The combination of a rotatin table, a

series of fixed clamping jaws ra ially ar ranged thereon, a movableclamping jaw over each fixed jaw, an adjustable fulcrum for each fixedjaw at the inner end of. the latter, an eccentric engaging ithe'upp'erface of each movable jaw for forcing the free end of the latter towardthefixed jaw,-and automatic means. forrotating said eccentrics wherebythe movable jaws will be closed onto the blanks and subsequently openedto release the blanks. f j i 5. The combination of a rotating table, aseries of radially disposed fixed clamping jaws thereon, a movableclamping jaw for each fixed jaw each movable jaw being fulcrumed at itsinner end, a bolt for each pair of jaws, the bolts being fixed to theroeaeee table and passing loosely through the movable jaws,automatically actuating means carried by said bolts and engaging thejaws for moving the latter to clamping position, and means forsubsequently moving the movable jaws to the open position.

6. The combination of a rotating table, a

series of radially disposed fixed jaws thereon, an upper-jaw for eachfixed jaw, each upper jawibeing fulcrumed at its .inner end,

a bolt passing upwardly from each fixed jaw through its upper jaw, thelatter being loose on the bolt, an eccentric mounted on each bolt forclosing the movable jaws onto the-blank, means for yieldingly holdingthe outer ends of the jaws apart and means for automatically actuatingthe eccentrics to close'and release the. movable jaws.

7. The combination of-a rotating table, a series of radially disposedfixed clamping jaws, a cooperating movable jaw for each fixed jaw, eachmovable jaw-being fulcrumed at its rear and comprising upper and lowermembers and an intermediate yielding cushion, a bolt passing looselythrough each movable jaw, means carried by said bolt for actuatingthemovable jaw, and means automatically actuating said last mentioned meansto first clamp and then release the blank once at each revolution of thetable.

8. The combination of a rotating table having a series of radiallydisposed fixed clamping jaws, a coiiperatlng movable jaw for each'fixedjaw, means supporting eac movable jaw at its inner end, a bolt passingloosely through each movable jaw, an cecentric carried by each bolt andbearing against its movable-jaw, and adapted when actuated in onedirection tolclose onto a blank resting on the-lower jaw, and springstending to move the movabl' jaws away from the lower jaws. 7 I

9. The. combination of a rotating table, a series offradially disposedfixed clamping jaws on the upper face thereof, bolts pro-- jecting-fromsaid table up through the jaws, upper movable jaws mounted on saidbolts,

springs tending to normally hold the outer ends of said movable jawsaway from the lower jaws, an eccentric on each bolt for forcing theouter end of its co'tiperating upper-jaw toward its lower jaw, and meansfor automatically actuating said eccentric to first close and thenrelease the upper clamping jaw at each revolution of the table. 10. Thecombination of a rotating table having an upwardly projecting flangeconcentric with the axis of the table and provided with recesses, aseries of lower jaws radially disposed on said table adjacent theperiphery of the latter, bolts projecting upwardly from the table, upperjaws mounted on said bolts with their inner ends fulcrumed in therecesses in the flange, springs tending to force the outer ends of saidupper jaws away from the lower jaws,and eccentrics carried by the boltsand automatically actuated during the movement of the table for movingthe outer ends of said upper jaws toward the lower jaw.

11. The combination of a rotating table a series of radially disposedremovable clamping jaws thereon, and adjustable abutments intermediatethe jaws and secured to and carried by one of them.

12. The combination of a rotating table, a series of radially disposedremovable clamping jaws thereon, a series of adjustable abutmentssecured to the lower jaw of each clamp for supporting the blank againstdisplacement, and means for automatically opening and closing'said jaws.

13. In amachine for making brush handles, the combination of a rotatingtable, a series of radially disposed removable clamping jaws thereon,the meeting faces of'both jaws of each pair being cutaway to receive thehead of the handle blank, adjustable abutments secured to and carried bythe lower jaw for supporting the handle blank against lateraldisplacement, and means for opening and closing said jaws.

14. The combination of a rotating table, a series of radially disposedfixed clamping jaws thereon, a movable clamping jaw for each fixed jaw,an adjustable screw carried by the inner end of each movable jaw andforming the fulcrum for the latter, and automatically actuated meansengaging said jaw intermediate its ends for moving said jaw to itsclamping position and subse quently releasing the same.

15. The combination of a rotating table having an upwardly projectingflange concentric with the axis of the table and provided with recesses,a series of lower jaws radially disposed on said table adjacent theperiphery, bolts projecting upwardly from the table, upper jaws havingopenings for the passage of said bolts, the inner ends of said upperjaws resting in the recesses in the flange and retained against lateraldisplacement by the walls thereof, a screw secured ing witnesses.

GEORGE A. TURNER. Witnesses:

Jim. 0. LONGSHORE, J. E. HENRETTA.

